Utilizing waste heat in connection with smelting-furnaces.



n Patented sep't. 2,1902. nown.

UTILIZING .WASTE .HEAT IN CONNECTION WITH SMELTING FURNAGES.

No. 708,0l8.

(Application filed Apr. 12, 1902.)

(No Model.)

' UNITED STATES PATENT OFFICE,

RICHARD BROWN, OFSOUTHAMPTON, ENGLAND.

UTILIZING WASTE HEAT IN CONNECTION WITH SMELTING-FURNACES.

` SPECIFICATION forming part of Letters Patent N 0,708,018, datedSeptember 2, 1902.

Application filed April 172, 1902. Serial No.l lv0-2,586. (No model.) I

To all whom it may concern.-

Be it known that I', RICHARD BROWN, a subject of the King of GreatBritain and Ireland, and a resident of Southampton, in the county ofHants, England, (whose postal address is Highfield Mansions,Southampton, Hants, England,) have invented'certain new and usefulImprovements in Utilizing IVaste Heat in Connection withSmelting-Furnaces, (for which I have applied for British Patent No.18,772, dated September 20, 1901,) of which the following is aspecification.

My saidinvention has for its object to utilize wasteY heat in connectionwith smeltingfurnaces--such, for instance, as are used for smeltingoresfor the production of cast-ironby providing improved means whereby theheat from both the hot slag run off from the furnaces and from the ironitself immediately after it has been cast into pigs (which heat in bothcases has hitherto been allowed to go to waste) can be utilized to driveolf the moisture which may be in the ores or coke or other material forthe furnace before such ores or the like are charged into the furnace,this moisture being objectionable and adding to the cost in the smeltingoperations.

The apparatus used in carrying out my invention may be constructed invarious ways; but, by way of example, I append a sheet of drawings, tobe hereinafter referred to in describing my improvements and showing atransverse vertical section of a simple arrangement of the apparatus."

In carrying out'my invention, instead o storing the ores or the like forthe smeltngfurnace in the open I provide a covered shed or chamber A,Vof a length and breadth 'to suit the space available, this chamberbeing constructed of any suitable material, but preferably having theinsides of fire-brick and the roof of steel plates B, carried bytransverse beams and covered with brick or other material. The iioor ofthis chamber consists of plates C D of metal or other suitable material,supported at each edge by longitudinal angleiron bars E F and byangle-iron beams G H, extending from the walls of the chamberA to anumber of central iron standards J. The iron standards .I are covered bycentral plates K, carried by. angle-irons L and disf tance-pieces M,placed at intervals between the chamber A.

the plates K and C D. vThis construction of ioor thus forms two flues N,each of dimensions sulicient to allow iron bogies P to be passed intoand through such lines N, as here-Y inafter described.

Instead of two flues N the chamber Amay be of a breadth suitable foronly one flue or for more than two lues,'the floor-plates being arrangedand carried to suit.

The ores or other materials for the smelting-furnace and whichn are tobe dried are filled into trucks Q,.which are run up an incline at theend of the chamber A onto the top of the chamber and discharged into thechamber through hoppers R, arranged at intervals in the roof, or thechamber A may be filled as required by a movable elevator or steam navvyor the like running on rails parallel to the chamber, the ore being laiddown parallel to the chamber, or the ore may be lifted out of the trucksin which itis brought to the furnaces by a suitable steam-navvy or thelike and put into the chamber direct.

The slag is run from the furnaces into the iron bogies P, or the hotpig-iron immediately after it is set in the molds is placed in bogies, n

and these bogies are run into the lues N, being attached to a chain orwire rope passing through the fines and pulled by any suitable power.The waste heat in such slag or in such pig-iron acting through thefloor-plates C D K can thus be utilized for the purpose of driving o thewhole ora part of the moisture in the ores or other materials stored onv such plates. The moisture driven 0E may be allowed to escape bypartially opening a number of the doors of the hoppers R, or specialVentilating-pipes may be tted in the roof of The flues N are connectedtogether bythe passages between the central standardsJ, and dampers orend doors (not shown) are provided to prevent the free access of theexternal air to the iiues. Open-` ings S are formed at intervals throughthe Hoor-plates C D, so that a portion of theheated air will pass intothe space between the plates C, D, and K and from this space ascend upthrough the ores or other materials on. the floor, and vent-pipes T mayalso be provided at intervals along the outer edges of the plates C Dfor the same purpose. Hinged or other doors U, preferably lined withfire-brick, are

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provided at intervals in the side walls of the chamber, through whichdoors the dried ore or the like can be drawn as required, and in somecases the chamber may also be filled through these doors. When the slagor pigiron has given up its heat, as described, the bogies are pulledout of the ues N.

An additional galvanized or other rool:` may be carried above thechamber if thought desirable.

What I claim as my invention is- Apparatus for utilizing waste heat inconnection with smelting-furnaces, comprising a covered chamber toreceive the materials for

